CarCostCheck

BMW M5 (2021)

Running costs, common problems, and reliability data based on 43 real MOT tests in 2024.

Share:XFacebookWhatsApp

MOT Pass Rate

100%

Total Tests (2024)

43

Avg Mileage

45,385 mi

Est. Annual Cost

£2,037

Is the 2021 BMW M5 reliable?

Excellent reliability. Very few MOT failures. That's 18 points above the national average of 82%. It also outperforms the BMW brand average of 88%.

At 3 years old, 100% of BMW M5s from 2021 passed their MOT first time in 2024. That's based on 43 tests across the UK. The average mileage at this age is 45,385 miles.

How does the 2021 BMW M5 compare?

Rank among all 2021 cars53th out of 3,373(top 2%)
Rank among all BMW models26th out of 1,564(top 2%)
vs national average+18% (82% avg)
vs 2021 cars average+8% (92% avg)
vs BMW average+12% (88% avg)

Mileage Analysis

The average 2021 BMW M5 has 45,385 miles on the clock, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.

Best year to buy a BMW M5?

The most reliable year is the 2012 model with a 95% MOT pass rate, while the 2000 model has the lowest at 85%. The 2021 sits between the two at 100%.

How much does a 2021 BMW M5 cost to run?

⛽Fuel (Petrol, 4395cc)
£1,592
🏛️Road Tax
£190
🔧MOT Test
£55
🛠️Predicted Repairs
£200
Total per year£2,037
Per month£170/mo

Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.

BMW M5 by Year

YearPass RateTestsAvg Mileage
2021100%4345,385 mi
2020100%3534,728 mi
201995%25539,872 mi
201892%5045,133 mi
2017100%3958,281 mi
201694%1,33259,490 mi
201594%1,11160,765 mi
201494%1,30462,382 mi
201391%1,31066,323 mi
201295%81576,211 mi
201195%21976,893 mi
201077%3577,493 mi
200997%3074,096 mi
200895%22981,787 mi
200795%46783,923 mi
200689%46684,560 mi
200591%59792,623 mi
200394%62121,472 mi
200290%272119,488 mi
200190%435117,951 mi
200085%359125,310 mi
199989%229124,156 mi
1995100%44125,572 mi
199490%50115,651 mi
199390%62127,582 mi
199292%48150,004 mi
199191%46110,152 mi

Checking a specific BMW M5?

Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.

GB

Free instant check using official DVSA and DVLA data

About the 2021 BMW M5

The 2021 BMW M5 is a premium performance with a 4395cc petrol engine. 43 of these vehicles were MOT tested in 2024, making it a rare model on UK roads. It ranks in the top 2% of all 2021 cars for reliability.

With an average of 45,385 miles at 3 years old, BMW M5 owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.

2021 BMW M5 Fuel Costs

The 4395cc petrol engine is on the larger side, so fuel won't be this car's strong point. Expect around 30 mpg in mixed driving, which works out to roughly £1,592 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).

What does it cost to own a 2021 BMW M5?

Total estimated annual running cost is £2,037 (£170/month), broken down as £1592 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 100% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.

BMW M5 Reliability Trend

Newer BMW M5s show better MOT pass rates than older ones, with an average improvement of 4 percentage points.

Buying a Used 2021 BMW M5

At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet. If you're flexible on year, the 2012 model has the highest pass rate at 95%. Note: with only 43 tests in our data, these figures should be treated as indicative rather than definitive.

Alternatives to the 2021 BMW M5

The BMW M5 is actually the most reliable option among similar petrol premium performances from this era. Here are comparable petrol cars with similar engines: